$\left(x^3-2\right)\left(3x^2\right)+\left(x^3-2\right)\left(3x^2\right)$
$9n+12n+7$
$-4.9-\:-2$
$\int\frac{2x^2}{e^x}dx$
$\left(x+2\right)^4\frac{dy}{dx}+2\left(x+2\right)^3y=2$
$\lim_{x\to-\infty}\left(\frac{x-2}{\left(x+1\right)^2}\right)$
$64x^280x+25$
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